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Pick a box! (Posted on 2002-03-28) Difficulty: 3 of 5
You are shown three boxes, and told that one of them contains a prize. You are then asked to pick one box, and if that box is the one with the prize, you will win it. After picking a box, you are shown that one of the other two boxes is empty, and offered a chance to change your selection.

Should you do this? Would changing your choice to the other remaining box affect your odds of winning? Why or why not?

See The Solution Submitted by levik    
Rating: 4.2857 (14 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionAlternate explanation of the solutiontomarken2009-03-25 11:53:52
SolutionTwo Solutionsowl2005-08-17 14:36:31
SolutionSolutionStephen Ticsay2005-04-16 04:08:18
re: Cool analogyyocko2005-03-08 07:38:34
Solution6/9Bractals2005-03-08 07:12:10
Agree with solution? Problem simplified?john2005-03-07 17:11:43
re: Cool analogyjohn2005-03-07 16:52:33
Cool analogyTristan2005-03-04 03:01:28
re: Flat out wrong logic in solution.Tristan2005-03-03 22:20:52
Flat out wrong logic in solution.john2005-03-03 18:15:56
re(4): YES! ~33/66! All possibilites shown!Dustin2005-03-03 00:15:47
re(3): NO! 50/50! All possibilites shown!Tristan2005-03-02 23:31:06
re(2): NO! 50/50! All possibilites shown!john2005-03-02 21:03:49
Disagree with solution!john2005-03-02 16:18:09
re(3): YES! ~33/66! All possibilites shown!john2005-03-02 16:08:25
re(2): YES! ~33/66! All possibilites shown!Dustin2005-03-01 17:42:05
re: NO! 50/50! All possibilites shown!Dustin2005-03-01 17:30:30
re: NO! 50/50! All possibilites shown!john2005-03-01 17:24:54
NO! 50/50! All possibilites shown!john2005-03-01 17:09:37
re: kinda easyjohn2005-03-01 16:21:47
re:owl2004-12-11 05:46:49
No SubjectIain2004-05-09 14:24:09
Some ThoughtsNo Subjectlogischer Verstand2004-05-02 20:53:08
maybeBilly Bob2004-03-28 10:29:41
Solutionkinda easyomar2004-02-21 15:31:40
No SubjectCory Taylor2002-12-17 10:17:09
re: hmmmlevik2002-11-06 10:14:07
Some Thoughtshmmmdanny2002-11-05 11:35:50
Some ThoughtsCome on guys!Arcus2002-10-29 09:25:40
re: 50% vs 67%levik2002-10-17 09:01:31
50% vs 67%Jim Lyon2002-10-16 13:08:30
re: Why 50% is not the answer.levik2002-08-15 10:16:15
HeyDulanjana2002-08-14 20:55:02
Why 50% is not the answer.Paul2002-08-14 11:14:20
50% is the ONLY answer.Mike2002-05-10 15:32:06
Math vs. PuzzlesChris2002-05-07 04:50:40
More infoJohn2002-05-01 06:46:13
More info to Re: NoJohn2002-05-01 06:44:48
Re: NoJohn2002-05-01 06:43:30
NoD Willson2002-04-23 22:19:13
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